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MCQ

Q.

________ provides synchronization without increasing the number of bits.

A

Scrambling

B

Line coding

C

Block coding

D

None of the above

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MCQ

1.

______ provides redundancy to ensure synchronization and inherent error detection.

A

Block coding

B

Line coding

C

Scrambling

D

None of the above

Discussion

MCQ

2.

In ________, the phase of the carrier is varied to represent two or more different signal elements. Both peak amplitude and frequency remain constant.

A

ASK

B

PSK

C

FSK

D

QAM

Discussion

MCQ

3.

In _____ transmission, the frequency of the carrier signal is modulated to follow the changing voltage level (amplitude) of the modulating signal. The peak amplitude and phase of the carrier signal remain constant, but as the amplitude of the information signal changes, the frequency of the carrier changes correspondingly.

A

AM

B

PM

C

FM

D

none of the above

Discussion

MCQ

4.

The idea of RZ and the idea of NRZ-L are combined into the ________ scheme.

A

Manchester

B

differential Manchester

C

both (a) and (b)

D

neither (a) nor (b)

Discussion

MCQ

5.

The first step in PCM is ________

A

quantization

B

modulation

C

sampling

D

none of the above

Discussion

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